A situation came up today that has never happened before and i'm not sure how to deal with it.

DS is 7 and has been getting $5 a week pocket money since his birthday (Jan) he has been really good with it and hasen't always spent it immediatly. DD is 5 and does not get pocket money but will when she's 7.

Today, we were walking past EB games and DS asked me if he could buy a new DS game with his saved pocket money of $40. We have never told DS what to do with his money, only guide him so I said if he could find a pre-owned one that he really wants then he could have it. Anyhoo, when we were in there DD got upset because she wasn't getting anything, I told her that Paul was buying it with his own money but she couldn't understand why she doesn't get any money.

In the end I took her to the shop next door and bought her a little something but I don't want this to always happen.

Has this situation happened to anyone else? What should I do to stop her feeling left out or how do I make her understand that she will be able to buy her own things when she is old enough?

TIA